Tag: angiosperms

Quizzes (1) Questions (200)

Questions Related to angiosperms

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Cotyledons are also called as______________

  1. Seed fruit

  2. Seed stem

  3. Seed leaves

  4. Seed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Cotyledons are actually part of the seed. 
  • They are the first part of the plant to emerge and they look like little green leaves (hence, "seed leaves"). 
  • The cotyledons store food reserves for the growing seedling. The plant relies on this stored food for early growth. 
  • The cotyledons also can photosynthesize, which supplies extra energy until the first true leaves emerge.
Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Which among the following is the correct definition of monocots?

  1. Plants having single cotyledons in the seed

  2. Plants having two cotyledons in the seed

  3. Plants having three cotyledons in the seed

  4. Plant without seeds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The angiosperms are divided into two groups on the basis of the number of cotyledons present in the seed. 
  • The plants with seeds having single cotyledons are known as monocots. The plants with seeds having two cotyledons are known as dicots.
Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Angiosperms have____________

  1. Naked seeds

  2. Enclosed seeds

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Subkingdom phanerogams include two divisions, gymnosperms and angiosperms.
Gymnosperms have naked seed whereas angiosperms have seeds enclosed within a fruit. 
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Strobilanthes kunthiana flowers once in

  1. $5\ years$
  2. $12\ years$
  3. $20\ years$
  4. $50\ years$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Strobilanthes kunthiana (Neelakurinji) flower once in $12\ years$, its juvenile phase is very long. The last time this plant flowered during September-October $2006$. It is found in hilly area of Kerala, Karnataka and Tamil Nadu and attracts a large number of tourists due to mass flowering.

So, the correct answer is '12 years'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Strobilanthes kunthiana differs from bamboo in

  1. Being monocarpic

  2. Length of juvenile phase

  3. Being polycarpic

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bamboo can be monocarpic or polycarpic whereas Strobilanthes kunthiana is a monocarpic plant. The juvenile phase of bamboo can vary from 3-120 years and the juvenile phase of Strobilanthes kunthiana can vary from 8-16 years.

So, the correct option is 'Length of juvenile phase'. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Select the mismatched pair.

  1. Smallest angiosperm - Rafflesia

  2. Tallest angiosperm - Eucalyptus regnans

  3. Marine angiosperms - Zostera, Thalassia

  4. Angiosperm with smallest seed - Orchid

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Smallest angiosperm is Wolffia microscopici, while Rafflesia arnoldii is the parasitic plant with the world's largest flower.

So the correct option is A.

Multiple choice biology classification of plants phanerogams gymnosperms angiosperms

Mature gymnosperms lack

  1. Seeds

  2. Leaves

  3. Flowers

  4. Vascular tissue

  5. Woody growth
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gymnosperms are seed-bearing plants but lack the specialized features  of flowering plants. The gymnosperms do not bear flowers hence the seeds are naked i.e these are not enclosed within fruits.